H5003 נָאַף (naw-af')

KJV renderings: adulterer(-ess), commit(-ing) adultery, woman that breaketh wedlock.
Strong's definition: to commit adultery; figuratively, to apostatize
Derivation: a primitive root;

From James Strong's public-domain dictionaries (H), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.